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<A NAME="MPI_Wtime"><H1>MPI_Wtime</H1></A>
Returns an elapsed time on the calling processor 
<H2>Synopsis</H2>
<PRE>
double MPI_Wtime( void )
</PRE>
<H2>Return value</H2>
Time in seconds since an arbitrary time in the past.
<P>
<H2>Notes</H2>
This is intended to be a high-resolution, elapsed (or wall) clock.
See <TT>MPI_WTICK</TT> to determine the resolution of <TT>MPI_WTIME</TT>.
If the attribute <TT>MPI_WTIME_IS_GLOBAL</TT> is defined and true, then the
value is synchronized across all processes in <TT>MPI_COMM_WORLD</TT>.
<P>
<H2>Notes for Fortran</H2>
This is a function, declared as <TT>DOUBLE PRECISION MPI_WTIME()</TT> in Fortran.
<P>
<H2>See Also</H2>
also: MPI_Wtick, MPI_Comm_get_attr, MPI_Attr_get
<BR><P><B>Location:</B>wtime.c<P>
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